US5413893A - Optical information recording medium - Google Patents

Optical information recording medium Download PDF

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Publication number
US5413893A
US5413893A US08/045,121 US4512193A US5413893A US 5413893 A US5413893 A US 5413893A US 4512193 A US4512193 A US 4512193A US 5413893 A US5413893 A US 5413893A
Authority
US
United States
Prior art keywords
optical disk
film
recording layer
laser beam
gas molecules
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08/045,121
Other languages
English (en)
Inventor
Harumichi Tsukada
Etsuji Akimoto
Masahiro Tsumura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daicel Corp
Original Assignee
Daicel Chemical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daicel Chemical Industries Ltd filed Critical Daicel Chemical Industries Ltd
Priority to US08/045,121 priority Critical patent/US5413893A/en
Application granted granted Critical
Publication of US5413893A publication Critical patent/US5413893A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G11B7/00452—Recording involving bubble or bump forming
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • G11B7/2585—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers based on aluminium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/146—Laser beam

Definitions

  • the compact disk is a reproduction-only optical disk which can only read out information through the use of a laser beam and comprises a plastic base having quantized signals formed in the form of a pit and coated with a reflective film of a thin aluminum film, etc.
  • Laser vision (LV) wherein an image is recorded in the form of an analog signal or a quantized signal in a similar shape has also been expanded.
  • the optical information recording medium comprises (1) a base, (2) at least one recording film provided on the base, being capable of bringing about a change in light tranmittance upon being exposed to an optical and/or thermal energy of an incident laser beam., and (3) a reflective film provided on the recording film. It can exhibit a high contrast and is interchangeable with CD and LV.
  • the recording film is composed of a substance being capable of bringing about a change in light transmittance upon being exposed to an optical and/or thermal energy of an incident laser beam.
  • the recording film may comprise a thin film of a thermoplastic resin and a compound, contained in the thin film, being capable of generating gas molecules by decomposing when exposed to an incident laser beam.
  • the recording film serving as the first layer of the optical information recording medium of the present invention is formed so that the light transmittance after the recording differs from that existing before the recording by the energy of a laser beam. Examples of preferable methods for attaining this purpose include those described hereinbelow.
  • the recording film is formed of a substance which chemically changes upon being exposed to an incident laser beam energy and/or a thermal energy.
  • the substance may be any of organic and inorganic substances as long as it has a light transmittance which changes according to the chemical change.
  • a recording layer capable of bringing about a change in the light transmittance, before and after the recording due to absorption of the energy of a laser beam is provided between a base and a reflective film, and the reflectance of the reflective film is changed through the utilization of the change in the light transmittance of the recording film, thereby attaining a contrast sufficient to record signals and, at the same time, eliminating the necessity of the air sandwich structure through the selection of a suitable material for the reflective film.
  • FIG. 1 is a schematic cross-sectional view of a film structure of the optical information recording medium of the present invention before laser beam radiation;
  • FIG. 1 is a cross-sectional view of one embodiment of the present invention, wherein numeral 1 designates a plastic base, numeral 2 a groove for recording a signal, numeral 3 a recording film for lowering the transmittance through energy absorption, numeral 4 a reflective film having a reflectance of 70% or more, and numeral 5 a protective film for protecting the reflective film from damages.
  • a reflective film 4 comprising a thin gold film of a thickness of 20 nm was provided on the recording film 3, and spin-coated with an UV-curable resin SD17 (a product of Dainippon Ink & Chemicals, Inc.) to form a protective film 5 having a thickness of 10 ⁇ m, thereby preparing an optical information recording medium.
  • an UV-curable resin SD17 a product of Dainippon Ink & Chemicals, Inc.
  • the optical information recording medium thus formed was irradiated with a laser beam to chemically change the above-described mixture constituting the recording film 3.
  • irradiation with a laser beam produces a blackened portion 6 having a lowered transmittance due to the chemical change in the recording film 3.
  • This portion intercepted the laser beam, and the reflectance was lowered to 23%. This provides a sufficient contrast against a reflectance of 72% of the unrecorded portion.
  • the C/N ratio determined by recording a signal of 720 kHz at a linear velocity of 1.2 m/sec was 47 dB.
  • a base 1 having a recording guide groove (pit) 2 was spin-coated with a dispersion of a diazonium salt represented by the following formula (III) in an alcoholic solution of a thermoplastic resin cellulose acetate to form a recording film 3 having a thickness of 8 ⁇ m.
  • a diazonium salt represented by the following formula (III) in an alcoholic solution of a thermoplastic resin cellulose acetate to form a recording film 3 having a thickness of 8 ⁇ m.
  • a reflective film 4 comprising a thin gold film of a thickness of 20 nm was provided on the recording film 3, and spin-coated with an U currable resin SD17 (a product of Dainippon Ink & Chemicals, Inc.) to form a protective film 5 having a thickness of 10 ⁇ m, thereby preparing an optical information recording medium.
  • an U currable resin SD17 a product of Dainippon Ink & Chemicals, Inc.
  • the entire surface of the optical information recording medium was first exposed to an ultraviolet ray to decompose the diazonium salt contained in the recording film, thereby generating a nitrogen gas.
  • the generated nitrogen gas does not give rise to a cell in this stage, and trapped in a compressed state in the recording film 3.
  • the nitrogen gas in a compressed gas expands within the recording film 3 softened by the heat to form a cell.
  • the C/N ratio determined by recording a signal of 720 kHz at a linear velocity of 1.2 m/sec was 51 dB.

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
US08/045,121 1989-04-28 1993-04-12 Optical information recording medium Expired - Fee Related US5413893A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US08/045,121 US5413893A (en) 1989-04-28 1993-04-12 Optical information recording medium

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP1111317A JP2527476B2 (ja) 1989-04-28 1989-04-28 光情報記録媒体
JP1-111317 1989-04-28
US51118990A 1990-04-19 1990-04-19
US79988691A 1991-12-02 1991-12-02
US08/045,121 US5413893A (en) 1989-04-28 1993-04-12 Optical information recording medium

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US79988691A Division 1989-04-28 1991-12-02

Publications (1)

Publication Number Publication Date
US5413893A true US5413893A (en) 1995-05-09

Family

ID=14558156

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/045,121 Expired - Fee Related US5413893A (en) 1989-04-28 1993-04-12 Optical information recording medium

Country Status (4)

Country Link
US (1) US5413893A (ja)
EP (1) EP0395053B1 (ja)
JP (1) JP2527476B2 (ja)
DE (1) DE69031054T2 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060147833A1 (en) * 2003-01-24 2006-07-06 Kasperchik Vladek P Color forming compositions with improved marking sensitivity and image contrast and associated methods
US20070047420A1 (en) * 2005-08-25 2007-03-01 Fuji Photo Film Co., Ltd. Optical information recording medium, optical information recording method and optical information reproducing method
US20080199807A1 (en) * 2007-02-16 2008-08-21 Fujifilm Corporation Optical information recording medium, method of recording information and method of using compound

Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB850954A (en) * 1957-02-07 1960-10-12 Gen Aniline & Film Corp Bubble-forming, light-sensitive materials using dispersed photosensitizers in hydrophobic resin
GB956337A (en) * 1961-07-03 1964-04-22 Eastman Kodak Co Vesicular image-forming materials
US3457071A (en) * 1964-07-16 1969-07-22 Kalvar Corp Method of making reversal images
US3785821A (en) * 1966-08-01 1974-01-15 N Notley Method of developing vesicular photographic materials
US4042391A (en) * 1974-04-25 1977-08-16 Mitsubishi Chemical Industries Ltd. Process for forming vesicular photographic images by employing simultaneous actinic light and infra-red reflex exposure
US4230939A (en) * 1977-09-29 1980-10-28 U.S. Philips Corporation Information-recording element having a dye-containing auxiliary layer
US4328303A (en) * 1980-05-30 1982-05-04 Research Foundation Of City University Of New York Preparation of metal containing polymeric material via laser chemistry
US4339520A (en) * 1980-04-16 1982-07-13 Hoechst Aktiengesellschaft Light-sensitive vesicular material
US4415650A (en) * 1977-06-14 1983-11-15 Fuji Photo Film Co., Ltd. Recording material
US4430414A (en) * 1982-11-12 1984-02-07 Minnesota Mining & Manufacturing Company Image stabilizers for vesicular film
US4465767A (en) * 1981-11-27 1984-08-14 Ricoh Company, Ltd. Optical information recording medium
US4510512A (en) * 1981-12-25 1985-04-09 Kanzaki Paper Manufacturing Company, Limited Heat-sensitive record material
JPS61162386A (ja) * 1985-01-12 1986-07-23 Tdk Corp 光カ−ド
US4622284A (en) * 1984-03-01 1986-11-11 Digital Recording Corporation Process of using metal azide recording media with laser
JPS61258787A (ja) * 1985-05-13 1986-11-17 Asahi Chem Ind Co Ltd 情報の記録媒体
US4673626A (en) * 1984-03-31 1987-06-16 Dai Nippon Insatsu Kabushiki Kaisha Optical recording card with optical recording layers
JPS62239436A (ja) * 1986-04-11 1987-10-20 Canon Inc 光学的記録媒体
JPS63299980A (ja) * 1987-05-30 1988-12-07 Kuraray Co Ltd 光記録媒体及びこれを用いる記録方法
JPS63299986A (ja) * 1987-05-30 1988-12-07 Kuraray Co Ltd 光記録媒体及びこれを用いる記録法
US4809022A (en) * 1983-06-27 1989-02-28 Optical Disc Corporation Direct read after write optical storage medium
JPH01110185A (ja) * 1987-10-22 1989-04-26 Ricoh Co Ltd 感熱記録材料
US4845000A (en) * 1982-09-29 1989-07-04 Tokyo Shibaura Denki Kabushiki Kaisha Radiation sensitive carrier body utilized as stamper structure
US4933221A (en) * 1984-07-31 1990-06-12 Canon Kabushiki Kaisha Optical recording device
US4985345A (en) * 1989-02-02 1991-01-15 Ricoh Company, Ltd. Recording material

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6417234A (en) * 1987-07-10 1989-01-20 Fuji Photo Film Co Ltd Optical information recording method and information recording medium

Patent Citations (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB850954A (en) * 1957-02-07 1960-10-12 Gen Aniline & Film Corp Bubble-forming, light-sensitive materials using dispersed photosensitizers in hydrophobic resin
GB956337A (en) * 1961-07-03 1964-04-22 Eastman Kodak Co Vesicular image-forming materials
US3457071A (en) * 1964-07-16 1969-07-22 Kalvar Corp Method of making reversal images
US3785821A (en) * 1966-08-01 1974-01-15 N Notley Method of developing vesicular photographic materials
US4042391A (en) * 1974-04-25 1977-08-16 Mitsubishi Chemical Industries Ltd. Process for forming vesicular photographic images by employing simultaneous actinic light and infra-red reflex exposure
US4415650A (en) * 1977-06-14 1983-11-15 Fuji Photo Film Co., Ltd. Recording material
US4230939A (en) * 1977-09-29 1980-10-28 U.S. Philips Corporation Information-recording element having a dye-containing auxiliary layer
US4339520A (en) * 1980-04-16 1982-07-13 Hoechst Aktiengesellschaft Light-sensitive vesicular material
US4328303A (en) * 1980-05-30 1982-05-04 Research Foundation Of City University Of New York Preparation of metal containing polymeric material via laser chemistry
US4465767A (en) * 1981-11-27 1984-08-14 Ricoh Company, Ltd. Optical information recording medium
US4510512A (en) * 1981-12-25 1985-04-09 Kanzaki Paper Manufacturing Company, Limited Heat-sensitive record material
US4845000A (en) * 1982-09-29 1989-07-04 Tokyo Shibaura Denki Kabushiki Kaisha Radiation sensitive carrier body utilized as stamper structure
US4430414A (en) * 1982-11-12 1984-02-07 Minnesota Mining & Manufacturing Company Image stabilizers for vesicular film
US4809022A (en) * 1983-06-27 1989-02-28 Optical Disc Corporation Direct read after write optical storage medium
US4622284A (en) * 1984-03-01 1986-11-11 Digital Recording Corporation Process of using metal azide recording media with laser
US5041356A (en) * 1984-03-31 1991-08-20 Dai Nippon Insatsu Kabushiki Kaisha Process for preparing optical recording material
US4673626A (en) * 1984-03-31 1987-06-16 Dai Nippon Insatsu Kabushiki Kaisha Optical recording card with optical recording layers
US4933221A (en) * 1984-07-31 1990-06-12 Canon Kabushiki Kaisha Optical recording device
JPS61162386A (ja) * 1985-01-12 1986-07-23 Tdk Corp 光カ−ド
JPS61258787A (ja) * 1985-05-13 1986-11-17 Asahi Chem Ind Co Ltd 情報の記録媒体
JPS62239436A (ja) * 1986-04-11 1987-10-20 Canon Inc 光学的記録媒体
JPS63299986A (ja) * 1987-05-30 1988-12-07 Kuraray Co Ltd 光記録媒体及びこれを用いる記録法
JPS63299980A (ja) * 1987-05-30 1988-12-07 Kuraray Co Ltd 光記録媒体及びこれを用いる記録方法
JPH01110185A (ja) * 1987-10-22 1989-04-26 Ricoh Co Ltd 感熱記録材料
US4985345A (en) * 1989-02-02 1991-01-15 Ricoh Company, Ltd. Recording material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
T977001 Huffey et al Dec. 5, 1978. *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060147833A1 (en) * 2003-01-24 2006-07-06 Kasperchik Vladek P Color forming compositions with improved marking sensitivity and image contrast and associated methods
US20070281244A9 (en) * 2003-01-24 2007-12-06 Kasperchik Vladek P Color forming compositions with improved marking sensitivity and image contrast and associated methods
US7700258B2 (en) * 2003-01-24 2010-04-20 Hewlett-Packard Development Company, L.P. Color forming compositions with improved marking sensitivity and image contrast and associated methods
US20070047420A1 (en) * 2005-08-25 2007-03-01 Fuji Photo Film Co., Ltd. Optical information recording medium, optical information recording method and optical information reproducing method
EP1768119A3 (en) * 2005-08-25 2007-12-19 FUJIFILM Corporation Optical information recording medium, optical information recording method and optical information reproducing method
US20080199807A1 (en) * 2007-02-16 2008-08-21 Fujifilm Corporation Optical information recording medium, method of recording information and method of using compound

Also Published As

Publication number Publication date
DE69031054T2 (de) 1997-10-30
EP0395053B1 (en) 1997-07-16
EP0395053A2 (en) 1990-10-31
JPH02289933A (ja) 1990-11-29
DE69031054D1 (de) 1997-08-21
JP2527476B2 (ja) 1996-08-21
EP0395053A3 (en) 1991-05-08

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